Spanner wrench with means to grip the inner surface of pulley rims



N0V 23,' 1948- J. J.. SULLIVAN SPA'NNER WRENCH WITH MEANS TO GRIP THEINNER SURFACE 0F PULLEY RIMS Filed May 3l, 1946 Jf/swycz Swan/fnv,l I

Patented Nov. 23, 1948 UNITED f STATES PATENT OFFICE 4SPANNER WRENCHWITH MEANS To GRIP Y THE INNER SURFACE oF PULLEY RIMS Jerry J. Sullivan,Huntington Park, Calif.

Application May 31, 1946, Serial No. 673,308

Claims. 1 j

This inve-ntion relates to a spanner Wrench which is particularlyadapted for adjusting the valves of injectors of a Diesel engine, butmay be used as a general purpose wrench.

One object of the invention is to provide a spanner wrench, so formedthat it may be applied to a pulley wheel or the like and then caused tohave binding grip with the inner sur.- face of the rim of the wheelandturn the wheel when transverse swinging movement-,is imparted to thewrench. i

Another object of the invention is to provide a wrench having a bodyformed with a head and a shank extending therefrom and carrying a handlewhich is pivotally mounted `and disposed along a handle at the rear endof the shank, the head having depending lugs or teeth spaced from eachother and the `pivoted handle being connected with abar or stripextending longitudinally of the shank, so that when the handles aregrasped and the pivoted handle swung towards the rigid handle, a toothor finger at the front end of the strip will shift into engagement withthe rim of the pulley and together with the teeth of the head iirmlygrip the pulley and turn the pulley.

Another object of the invention is to provide a wrench wherein grip uponthe pivoted handle which is naturally increased by strain exerted toturn the pulley will cause the teeth toA be brought into iirrner bitingengagement withthe rim of the pulley and thus prevent the teeth fromslipping and moving about the pulley 'circumferentially thereof insteadof `turning `the pulley.

Another object of the invention is to provide a wrench consisting `.of afew number of parts which are of simple construction and" quite strong.

The invention is illustrated in the accompanying drawings wherein:

Figure 1 is atop view of the improved wrench;

Figure 2 is a View showing the Wrench partially in longitudinal sectionand partially in side elevation;

Figure 3 is a transverse sectional view taken along line 3-3 of Figure1;

Figure 4 is a sectional view taken along line 4 4 of Figure 1;

Figure 5 is a view of the body portion of the wrench, and

Figure 6 is a side view of the bar or strip actuated by the pivotedhandle ofthe wrench. f

This `Spanner Wrench hase :body or main section I formed of steel orother strong metal and Alopening (i of the head 2.

shapedl to provide a head 2, from which extends a shank 3 terminating ina rigid handle 4 having opposite faces formed with recesses 5. Throughthe head 2 is formed an opening 6 which flares towards its opposite endsand in `front of this opening the head has its outer face formed with arecess 1 of triangular outline.

Lugs 8 extend downwardly from the head at opposite sides .of the recessI and these lugs extend radially of the opening 6 and gradually in,-crease in depth towards their outer ends which are beveled or taperedfrom opposite sides `to form sharp ends yfor the lugs. The Vlugsconstitute teeth for the head 2 and when the Wrench is applied to apulley wheel 9 with its outer or front end resti-ng upon the rim I0thereof, the sharp outer ends of the lugs or teeth will bear against theinner surface of the rim in spaced relation to each othercircumferentially `of the pulley.

An opening II is formed midway the width of the body `I, atapproximately the junction of the head 2 with the shank 3 and throughthis opening passes a tooth or finger I2 formed by bending the front endcf a metal bar or strip I3 which extends longitudinally of the shank andis seatedin a recess I 4 formed in the outer side face `of the shank. Anarcuateslot I5 is formed longitudinally of the shank adjacent the rearendof the recess I4 and through this `slot passes a. pin I6 which alsopasses through an opening II formed throughthe rear end portion of thestrip or bar I3.

The pin I6 also extends through the Aopenings I8 which areformedintheenlargedforward end portions I9 of the side walls `20 of a movablehandle 2l. This handle is U-shaped in cross section and straddles theshank of the handle 4, a `pin 22 being passed through openings 23forinedin the handle 2| and through an opening 22 formed in the shank 3 topivotally mount the handle 2I and permit it to have swinging movementtowards and awayfromA the rigid handle 4. When Athepivoted handle isswung away from `the-rigid handle, the bar I3 will be shifted forwardlyand the teeth `t and ringer I2 may `be iitted into the `side' recess of`the pulley wheel l9 with the shaft `25 passing Vthrough the center The`two handles will .then .be graspedand pressure applied to swing .the`handle 2l towardshandle 4 and the bar I3 will be .drawn rearwardly andits ,nnger brought into `engagement with the inner surface of the flangeof the pulley. This will `cause the sharp `cned outer 'ends :off-theteeth 48 to bite into .the

flange of the pulley and firmly grip it so that when the wrench is swungcircumferentially of the shaft, the pulley and the shaft will be turned.

When force is exerted to turn the pulley, the gripping pressure upon thehandles is increased and this will increase grip of the teeth upon thepulley. Therefore, the teeth will not slip circumferentially of thepulley and allow the wrench to be moved without turning the pulley.After the pulley has been turned as much as desired it is merelynecessary to release grip upon the handles and the wrench may be readilyremoved from the pulley.

It will thus be seen from the foregoing description that I have provideda spanner wrench that will at all times be positive and eflicient in itsoperation and further can be manufactured at a very low cost.

While I have shown the preferred embodiment of my invention, it is to beunderstood that various changes may be made in the size, shape andarrangement of parts without departing from the spirit of the inventionand scope of the appended claims.

Having thus described the invention, what is claimed is:

l. A wrench comprising a body having a head at its front end and a shankextending rearwardly from the head and terminating in a rigid handle,the head being formed with an opening and the shank with alongitudinally extending recess, there being an opening formedv adjacentthe front end of the recess and a longitudinally extending arcuate slotnear its rear end, said shank being formed near its rear end with anopening spaced transversely from the arcuate slot, lugs extendingdownwardly from the head forwardly of its opening and extending radiallythereof and having their front ends beveled from opposite side faces toform sharpened front ends for the lugs, a movable handle U-shaped incross section straddling the shank and the rigid handle and having frontends of its side flanges enlarged, a pin passing through the opening atthe rear end of the shank and through side portions of the enlargedfront 4end portion of the movable handle and pivotally mounting themovable handle, a strip extending longitudinally in the recess of theshank and having its front end portion bent to form a finger passingthrough the opening at the front end of the shank, the rear end of saidstrip tting under the enlarged front end portion of one flange of thepivoted handle, and a pin passing through the slot of the shank andthrough aligned openings formed through the rear end of the strip andside portions of the front ends of the flanges of the pivoted handle topivotally connect the strip with the pivoted handle and cause the stripto be shifted longitudinally and its tooth moved towards and away fromthe lugs when the pivoted handle is moved.

2. A wrench comprising a body having a handle at its rear end, ashaft-receiving opening being formed near the front end of the body, theintermediate portion of the body being formed with a forward opening andadjacent its rear end with a longitudinally extending slot, lugsextending downwardly from the body and forwardly from theshaft-receiving opening radially thereof and sharpened at their frontends and constituting teeth for engaging the inner surface of a marginalflange of a pulley carried by a shaft about which the wrench is fitted,a handle pivoted to the body in straddling relation thereto for swingingmovement transversely of the body, a strip extending longitudinally ofthe body and having its front end bent to form a finger passing throughthe forward opening, `and a pin passing through the slot of the body andthrough aligned openings in the pivoted handle and the rear end of thestrip to pivotally connect the strip with the pivoted handle and causethe strip to be shifted longitudinally and its finger moved towards andaway from the lugs when the pivoted handle is moved transversely.

3. A wrench comprising an elongated body having its forward portionformed with a shaft-receiving opening, there being a finger-receivingopening spaced rearwardly from the shaft-receiving opening, lugs carriedby the body and extendingr forwardly from the shaft-receiving openingradially thereof, a strip extending longitudinally of said body andhaving a nger at its front end passing through the nger-receivin-gopening for engaging a pulley and forcing the lugs into grippingengagement Awith the pulley when the strip is shifted longitudinallyrearwardly of the body, a rigid handle at the rear end 0f the body, amovable handle straddling the body transversely thereof and pivoted at aside of its front end for swinging movement transversely of the bodytowards and away from the same, and a pin pivotally connecting the rearend of said strip with the pivoted handle and causing the strip to beshifted longitudinally when the pivoted handle is moved and shift thefinger towards and away from the lugs.

4. A wrench comprising an elongated body having a rigid handle at itsrear end, lugs projecting from a side face of the front end portion ofsaid body and diverging forwardly and sharpened at their front ends, astrip extending longitudinally of said body and having a finger at itsfront end passing through an opening formed in the body rearwardly ofthe lugs, and a movable handle extending longitudinally of the body at aside of the rigid handle and having its front end portion straddling thebody and pivoted thereto and pivotally connected with the rear end ofthe strip for shifting the strip and its finger longitudinally of thebody when the pivoted handle is swung towards and away from the rigidhandle.

5. A wrench comprising an elongated body having a rigid handle at itsrear end, wheel-engaging teeth spaced from each other transversely ofthe front end of the body, the body being formed with an opening spacedrearwardly from said teeth, a

JERRY J. SULLIVAN.

REFERENCES CITED The following references are of record in the iile ofthis patent:

UNITED STATES PATENTS Number Name Date 393,903 Hemans Dec. 4, 1888446,545 Blodgett Feb. 17, 1891 738,216'y Littley Sept 8, 1993

